Brake-beam.



-B. L'. WHITE. BRAKE BEAM, APPLIoA'rIon FILED mii e, 190s.

988,609. Patented Apr. 1911.

2 sums-SERT 1.

6%/ /W ffii/f Y 7 W EDWARD @WH/TE /NVENTOE J UNITED sTATE EDWARD I.. WHITE, oij Caicedo, ILLINOIS, AssIGNon To CHICAGO RAILWAY nourr-l MENT CQMEANY, QE CHICAGO, ILLINOIS, A CORPORATION or ILLINOIS.

BRAKE-BEAM. i

Specification of Letters Patent.

Patented Apr. 4, 1911.

To all whom fit may concern:

Be itknoivn that I, EDWARD L, VIIITF., a

' citizen ofthe United States, residing at Ghicago, llinois, have invented a Certain new and useful Improvement in Brake-Beams, of`which the following is a full, Clear, and exact description, such as Will enable others *skilled in the art to which it appertains to malte and use the same, reference being had '10'to the accompanying drawings, forming part of this specification, in which Figure 1 is avertical section taken through the end of a brake beam and showing my improved method of adjustably mounting l5 the head thereon. Fig. 2 is a plan vievv of the brake, head seen in Fig., 1. Fig. 3 is a `vertical section taken through the Center of ya brake head, showing a modiied termv of the means employed for adjustably mountingthe same on the beam. Fig. 4 is an elevation of a brakev head, showing a further modied form of means for mounting said head lon the beam. Fig. 5 is an elevation of the lower portion of 'the head of the type seen in Fig. 4,'showinga modified construction thereof. l Fig., 6 isan elevation of a brake head partly in section, showing a further modified formi .of the means for adjustably mounting the head on the beam.

My invention relates enerally to brake beams and more particu arly to the brakev heads and the means employed for adjustablymounting the same on the ends of the beam, and my invention further relates to' that class of adjusta ile brake heads which is illustrated and d cribed in the patent issued to Henry B. Robischung, No. 485,823, dated November 8, 1892.

The principal object oi' my invention is 40 to generally improve the construction shown in the patent above referred to, and provide simple, inexpensive means whereby the brake heads are arranged upon the ends of the beam in such a manner that they will automatically adjust themselves to the peripheries of the car wheels when the brakes are set, regardless of the character or position of the brake hangings. 4 A further object of my invention is to locate the locking blocks in such positions as that the brake heads are drawn against the front sides ofthe end ortions of the beams and the sleeves or t rust blocks located thereon, thus doing away with all clearance between the beams and brake heads at the `points of contact, which clearance 4would latter would be transmitted to the brakeactuating mechanism, when the brakes are set.

A further object of my invention is to provide simple yielding pressure devices which normally engage the locking blocks, thus holding the heads rmly'locked on the ends of the beam and which yielding pres V sure means gives Way to such degree as to permit the heads to rotate slight-ly relative to the beam when the brakes are set, thus permitting automatic adjustment of the brake heads to take place. After such automatic adjustment has taken place, the spring-pressed locking blocks rengage with the ends of the beam or the sleeve loproper iXed position.

Another object of my invention is to arrange the locking blocks in a small s ace ,so that the brake bea-m may be inside hung.

To the above purposes, my invention contion and arrangement of parts hereinafter more fully described and claimed.

` Referring by numerals to the accompanying'drawings, l designates the thrust block or sleeve which is arranged on the end of the brake beam. Formed in this sleeve or thrust block is a segmental groove 2, the bottom. of which is provided with a series of transverseV serrations or teeth 3.

d designates the brake head, which is of the usual type and provided with a circular opening 5 which receives the sleeve or thrust block 1. Formed integral with the rear portion of the head i is a vertically disposed housing (i, the open ends of which communicate with the opening 5. Located. in the open ends of this housing (i, and adapted to move therethrough, are .locking blocks 7the inner ends oi' which arc pro vided with transverse serrations or teeth 8, Which 'are'adapted to enofage with the serrations or teeth f3 formedj in the bottom of the groove 2. l

9 designates flat or leaf springs, the rear ner to the body ortion of the head- 1i, the free ends of` said3 otherwise result in lost motion, and which,

cated thereon, and thus4 hold the'heads inl sists in certain novel features of construeendsK of Whclrfare fixed in any suitable man-z springs 9 being bent to- 'io sill 9 vl ha [laid be? af eonsiderablepressure on the blocks 8 therefore holding the serrated or toothed inner faces of said blocks lnto close engagement with the corresponding serrated face on the sleeve 1, which action maintains the head in close engagement with the front side of the sleeve or thrust block 1.. Such engagement not only takes up all the clearance and Wear between the sleeve and head but it also prevents the head from rattling While in use.

In the modification seen in Fig y3, a single spring 11 is made use of, the central portion of said spring, lixed in any suitable manner to the rear side of the housing 6 and the ends ofsaid spring' being bent around in the form of loops 12, the free ends of which bear directly against the outer ends of the blocks 7.

In the modification seen inv Fig. 4 a single locking block 13 is arranged in the rear portion of the'head 4 and bearing against vthe rear side of this block is the central portion of a strap 14, bentv into approximately some circular form, one end thereof being fixed to the headv 4 by means of a pin or rivet 15, the opposite end being loosely conneeted beneath an adjusting nut 16 located upon a bolt 17 situated in the lower portion of said head 4. In this construction the head 4 is not automatically adjustable upon the beam, and to adjust said head it is necessary to loosen the nut 16 to such a degree that the strap 14"can be loosened to permit the disengagement o1 the block 1'3 with the sleeve or thrust block on the end of the beam. j

l/Vhen the partsare properly assembled as shown-in Fig. 4, the block 13 is held in engagement, with the sleeve or thrust block and the head is held positively locked onl said sleete or thrust block. This construe-- tion takes up any lost motion or Wear between the sleeve or thrustJ block on the head, and also performs the functions of an anti- .rattlen In thel modified construction shovvnin Fig. 5, an expansive coil spring 18 is located.

adjustment takes place the spring 18,l together with the spring 14.very rigidly locks the head on the beam.

In the modification shown in Fig. 6, a single locking block is made use of, and thefhead 4 is provided with a pair of recesses or pockets 20 located on opposite sides ot' the circular opening of said head and located in said pockets or recesses are expansive coil springs 21. A strap 22 extends around the rear portion of the head 4 and bears directly upon the block 13, the ends of said strap extending into the pockets 20 through the coil springs located therein and being provided on their ends with Washers 28 and 4nuts 24. It Will be readily understood that this form of head is automatically adjustable on the beam and when the automatic adjustment takes place, the springs 21 Will be suiiciently compressed to permit the block 13 to disengage from the sleeve or thrust block when the rotary motion of the parts relative to one another takes place.

Thus it will be seen how I have provided a simple vand inexpensive structure for locking brake heads upon the ends of the brake beam, Which'construction readily, peri mits the heads to automatically adjust themselves upon the beam at the time the brakes are applied.

My improved construction also takes up any clearance due to Wear between the beam and the heads, thereby doing away with lost motion which otherwise would be transmitted to the brake mechanism.

It will be observed that according to my construction the friotionblocks reduce the size of the socket so that the head is bound in adjusted positions upon the part of the which the head is mounted, forwardly against the front Wall of the socket, thus taking up all clearance space betweenthe beam-part and head at this point.

I do not, in' this application, claim the specific form of my invention disclosed in Figs; 4 and 5, as the structures disclosed in these ligures'form the subject matter, res Jcctively, of applications filed by me June 2x7, 1910, Serial Number 569,111, and August 8, 1910, Serial Number 576,260.

Having thus described my invention, Wh at I claim is: t

1l The combination with a brake beam, of a movable head, and a pair of automatically yielding locking blocks carried by the head and movable transversely to the axis of the beam for engaging the same at different points.'

2. The combination with a brake beam, of a movable brake head and a plurality of spring pressed l'rocking blocks carried by the head and movable transversely to the axis of the beam for engaging the same at different points.

3. The combination' with a brake beam having a sleeve located on its end, `of a brake head mounted on said sleeve, and a plurality of automatically yielding locking blocks. carried by the head and pressed inwardly for engaging the sleeve at dierent Q el.- Tlie combination of a brake beam hav'- ing a, sleeveA mounted on its end, of a head iiidtitlted on the sleeve, and a` plurality of spring-pressed locking blocks carried by the head and pressed inwardly for engaging the sleeve at dill'erent points.

3 5. The combination with a' brake beam, of a' brake head loosely mounted on the end i'ied by the head -and engaging the beam at ydifferent poiiits and an independent spring for each locking block.

G. The combination with a b ake beam, of

a sleeve on the end thereof, in which sleevo is formed a segmental groove, the. bottom of which groove is serrated, a brake head on O Athe sleeve, and a pair of independently moving locking' blocks carried by .the head and engaging in the groove in the sleeve.

7. T he combination with a brake beam, of

a sleeve located on'the end thereof in whichv sleeve is formed a groove, the bottom of which is serrated, ,a movable head on the sleeve, a pair of independent locking blocks.

i which locking blocks project into the opening in the head, and a spring bearing against each locking block.

` 10. The combination with a brake beam, of a movable brake head on the end of .the beam, a pair of oppositely disposed locking Jrg carried' by the head and adapted to Y w and means whereby said Ff'uv v forced` toward fehgage the"V been., l

i ll-llllnrhd one anotberr y y ll. The combination with a brake benin of `asleeve located on ,the end thereof, a portieri o, the peripheral face of which V, sleeve is serrated, a movable head on the "5 Slfpve', and a plurality of spi'mgpressed l'oclting blocks carried by the head and movable transversely to the engage at` diherent points on the serrated face thereof. i

12. The conibi'nation with a brake beam,4 f a Sleeve Alocated on vthe end thereof, a i' i face of which por 0f \the peripheral d sleeve iswm" ted, a movable head on1 1c f of spring-pressed locmng sleeve, a plurali Y f i d movable 5 blocks carried by the' head n axis of the sleeve to i `moving said Beer MAME-E COPY transversely to the axis of the sleeve to'engage at dierent points on the4 serrated' face thereof, the bearing faces of said blocks. be,` ing also serrated. 13. The combination with a brake beam I0 of a sleeve located on the end thereof, a por-4 tion of which sleeve is serrated, a movable head on the sleeve., a pair o' independent locking blocks carried by the head, the'bearing faces of which blocks are serrated and movable transversely to the axist of the sleeve to engage at different points on the serrated face of the sleeve, and a spring bearing against each locking block, i

lel. The combination with a br: ke beam, of a sleeve located on the end thereof inf which sleeve is formed a groove the bottom of which serrated, a movable head onthe sleeve, a pair of independent locking blocks carried by the head and engaging in the8'5 groove in the sleeve and a spring bearing against each locking block. y

15. rlhe coinbinaton with a brake beam, ot a sleeve located on the end thereofa head on the sleeve, a locking block carried by lilo head and engaging the sleeve, and

a yielding element arranged. outside the head yand engaging the locking block.

11j.. In a brano beam, the combination of a brake head having atangentially arranged -loclting block. `V

1T. In a brake beam, the combination of a brake head having a ytangentially mov able locking block.

18. In a brake beam, the combination of w a brake head having oppost-ely disposed, locking blocks movable transversely to the axis oi' the socket in said head. l

19,. In a brake-beam, the combination of a brake-liead having two oppositely disposed locking blocks movable in a direction tan: gential to the surface of the socket" in the head. Y

20. In a brake beam, the combination of a brake head having a tangentially arranged locking block, and a spring for holding said block in position.

21. In a brake beam, the combination of a brake head having a tangentially movable locking block, and a spring for moving said block tangentially.

T a. brake' beai,

Les. ""0 P e me ou f rf., i cooperating, lgks in Opposite directrong .In a brake beam, the combmauonl i ilnrality of loc ring brake head havlllflg a l 1 .kine block. blocks, and a Splng"fQr each o" i tion of a t. l 1 eombma y 24. In a biakebean met d a pl, u

brake head having a seem i. o erung. rahty olxloclnng block recSSeS P ytheremto.

'25. ln a brake the combination ofa y ositely movable lockwardly toward each beam,

" locking block l said locking block.

brake head having a socket, and a plurality oftangentially disposed locking block recesses opening thereinto.

26. In a brake beam,l the combination of a brake head having a socket, and a tangentially disposed locking block reepssopening thereinto.'

27. In a brake beam, the combination of a brake head having a: locking block, and means spanning the 'brake head to engage 28. In a brake beam, the combination of a brake head having a locking block, and means embracing said head and coperating with said locking block.

29. In a brake beam, the combination of a i brakev head having a locking block, and yielding means embracing said brake head and cooperating with said locking block.

30. In a brake beam, the combination of a brake head having' a plurality of locking blocks, and yielding means embracing said brake head and coperating with said looking blocks.-

3l. The 'combination of a brake-head having a socket, a part of the beam on which it is mounted, an plural means for lessening Ithe size of the socket, whereby the head is held in adjusted positions.

32. The combination of a brake-head having a socket, a part of the beam on which it is mounted, yand plural means pressing in Wardly against the beam-part to force the same to one side of said socket.

33. The combination of a brake-head having a socket, a part of the beam on which it is mounted, an`d plural means coperating with said parts to force the beam-part to"4 one side of said socket, whereby the head is held in position. I

34. The combination of a brake-head having a socket, a part of the beam on which it is mounted, and plural means movable in oppositel directions and cooperating with said parts to force-the beam-part to oneside of said socket, whereby the thead is held in position.

In testimony whereof I hereunto affix my signature in the presence of two witnesses, this 26th day of June 1909.

l EDWARD L. WHITE. Witnesses: w -EDWARD T. WALKER,

J osEPH W.y WEiiNLAND. 

